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Dietary supplementation with bean extract improves lipid profile in overweight and obese subjects.

Abstract
The aim of this study was to evaluate the long-term effects of a dietary supplementation of bean extract on serum lipids, nutritional parameters, and fat excretion in feces.Sixty-two overweight and obese (body mass index > 25 kg/m(2)) volunteers were randomized to receive the dietary supplement (n = 31, supplement group) or the placebo (n = 31, placebo group). There were 41 women and 21 men, ages 22 to 66 years. Two capsules of a dietary supplement or a placebo were administered three times daily for 3 mo. The supplement group was then invited to participate in an open-label study for 9 mo. Twenty-four subjects (7 men and 17 women) were randomized to receive two or four capsules of the supplement three times daily. Lipids and nutritional blood parameters were measured at baseline, after 3 mo, and at 12 mo. Excretion of fat in feces was measured. At 3 mo, reduction in serum concentration of cholesterol was found in the supplement group but not in the placebo group. High-density lipoprotein cholesterol, low-density lipoprotein cholesterol, and triacylglycerols in serum did not change in either group. In the 9-mo open-label study, no further reduction in serum cholesterol was observed. Low-density lipoprotein and the ratio of low- to high-density lipoprotein decreased, whereas triacylglycerols remained unchanged. Serum vitamin B12 and folic acid decreased but remained within the normal range. Ferritin and albumin in serum remained unchanged. No differences were observed in serum lipids and nutritional parameters between groups. The bean extract significantly increased fat excretion in feces. In conclusion, this dietary supplementation improved lipoprotein profile and enhanced fat excretion in feces in overweight and obese subjects.
AuthorsGrethe Stoa Birketvedt, Arlene Travis, Bodil Langbakk, Jon R Florholmen
JournalNutrition (Burbank, Los Angeles County, Calif.) (Nutrition) Vol. 18 Issue 9 Pg. 729-33 (Sep 2002) ISSN: 0899-9007 [Print] United States
PMID12297207 (Publication Type: Clinical Trial, Journal Article, Randomized Controlled Trial, Research Support, Non-U.S. Gov't)
Chemical References
  • Anticholesteremic Agents
  • Cholesterol, HDL
  • Cholesterol, LDL
  • Fats
  • Lipids
  • Plant Extracts
  • Triglycerides
  • Cholesterol
Topics
  • Adult
  • Aged
  • Anticholesteremic Agents
  • Cholesterol (blood)
  • Cholesterol, HDL (blood)
  • Cholesterol, LDL (blood)
  • Dietary Supplements
  • Double-Blind Method
  • Fabaceae
  • Fats (analysis)
  • Feces (chemistry)
  • Female
  • Follow-Up Studies
  • Humans
  • Lipids (blood)
  • Male
  • Middle Aged
  • Obesity (blood, drug therapy)
  • Phytotherapy
  • Plant Extracts (administration & dosage)
  • Triglycerides (blood)

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